201104170 六、發明說明： . 【發明所屬之技術領域】 v 本發明涉及照明裝置，特別涉及一種光源模組。 【先前技術】 大功率發光二極體（LED)照明零組件成為照明產品 前，通常要進行兩次光學設計。將LED晶片與積體電路封 裝成LED光電組件時，要先進行一次光學設計，以解決 LED晶片之出光角度、光強、光通量大小、光強分佈、色 溫之範圍與分佈，即所謂之一次光學設計。一次光學設計 φ 之目的係盡可能複數地取出LED晶片中發出之光。二次光 學設計係針對大功率LED照明產品而言，一般大功率LED 照明產品均有一次透鏡，其出光角度為120度左右。二次 光學設計係將經過一次透鏡後之光再通過二次透鏡改變其 光學性能，例如增大出光角度。二次光學設計之目的係讓 整個照明產品發出之光能滿足設計需求。 由於LED照明產品通常為面光源，其二次光學設計難 度較大，特別在用作車庫、煤礦等場所照明時由於需要燈 具之出光角度較大，因而其二次光學設計難度更為增加。 目前，具有大出光角度之LED照明燈具之二次光學設計， • 通常採用對LED進行燈内之特定立體排布達成，需要調整 燈具架構之設計來實現，使燈具結構複雜，組裝難度較大， 整體成本亦有所增加。 【發明内容】 有鑒於此，本發明旨在提供一種具有較大照明範圍之 的光源模組。 一種光源模組，其包括一基板，設置於所述基板頂面 一側之複數個第一光源，以及複數個反光元件，所述反光 元件與所述第一光源——對應地設置，用於反射所述第一 光源發出之光線進而照射基板底面一側之區域。 201104170 與先前技術相比，位於基板頂部之複數個第一光源對 應設置複數個反光元件，用以使第一光源發出之光線朝向 電路板底部下方區域反射，這樣’基板之底部下方區域亦 可被位於基板頂部之複數個第一光源照射到，從而使光源 模組獲得較大之出光角度。 下面參照附圖，結合具體實施例對本發明作進一步之 描述。 【實施方式】 以下’將結合附圖及實施例對本技術方案之光源模組 進行詳細說明。 •參閱圖1至2’ 一種光源模組，其包括發光模組1〇及 與發光模組10協同工作之光學糸統20。發光模組用於 產生光線，其包括電路板11與固定於電路板n上之複數 個LED12。本實施例中LED12係指利用透光樹脂將[ED 晶片封裝之LED封裝體。由此，透光樹脂即為led12之 初級光學系統，則光學系統20為LED12之次級光學系統， 用於對經過初級光學系統之光線進行光學導引，使光源模 組之發光特性滿足實際需求。可以理解，LED12亦可為其 他類型之光源，電路板11亦可為非電路板之其他承載板 鲁 只要可承載光源便可。 複數個LED12設置於電路板11之頂面一側。具體地， 複數個LED 12包括固疋於電路板11頂面中部區域之第一 組LED121及固定於電路板11頂面靠近邊緣區域之第二組 LED122。第一組LED121用於對與電路板1：1中部區域對 應之主要工作區域(例如，電路板打頂部正對之區域）進行 照明，第二組LED122用於對主要工作區域之週邊區域(例 如，電路板11頂部背對之區域）進行照明，這樣，光源模 組使用時，如用於煤礦、車庫等場所時，可提供較為廣闊 之照明範圍，以利實際工作之需要。本實施例中，第二組 LED121中之複數個LED排列於複數個同心圓周上，第二 201104170 組LED122中之複數個LED排列於一個圓周上，第二組 LED122所排成之圓周與第一組LED121之複數個圓周為同 • 心圓，且第二組LED122位於第一組LED121之外。 - 光學系統20包括複數個反光元件21與一透鏡罩22。 反光元件21固定於電路板11之頂面，透鏡罩22用於將發 光模組10與複數個反光元件21罩於其内。複數個反光元 件21固定於電路板11之頂部且位於靠近其邊緣之區域， 一方面將第二組LED122發出之光線朝電路板11底部之方 向反射，另一方面將第一組LED121發出之光線進行反射 以重新分配。每一反光元件21具有一用於反射第一組 • LED121發出光線之内反射面，以及一用於反射第二組 LED122發出光線之外反射面。 本實施例中，每一反光元件21對應第二組LED122 中之一個LED設置，其包括一底座210與自底座210向上 延伸之反射部211。底座210為一片體結構，其具有内凹 之外側邊，反射部211自該内凹之外侧邊沿與底座210垂 直或傾斜之方向延伸而成。具體地，反射部211為自電路 板11邊緣區域向中心區域凹陷之彎板結構，其包括拱起之 内反射面2111與内凹之外反射面2112，每一反光元件21 之反射部211環繞第二組LED122中對應之一個LED ’以 使該LED發出之光線盡可能被反射部211朝外反射。内反 射面2111可為抛物面、球面、橢球面、非球面等，用於對 第一組LED121中之複數個LED所發出之光線進行反射、 重新分配，將第一組LED121之出光角度修正到合適之角 度，使整個第一組LED121所發出之光線在主要工作區域 内連續分佈，且在60度到80度容易產生眩光之出光角度 範圍内之光強值比較小，眩光強度較小；在60度以内之出 光角度範圍内具有較大之光強值，以滿足標準照度之要 求。外反射面2112亦可為抛物面、球面、橢球面、非球面 等，用於將第二組LED122中之複數個LED所發出之光線 201104170 反射到電路板11頂部背對之區域，以使光源模組達到大角 度出光，第二組LED122發出之大部分光線照射到電路板 • 11頂部背對之區域，這樣，光源模組之出光角度通常會大 w 於180度（當然，小於360度），甚至可超過210度。 反光元件21為塑膠件或鈑金件。根據實際需要，可 對反光元件21之内、外反射面2111、2112進行表面處理， 以達到對光線不同方式之反射，使光源模組所發出之光線 達到不同之配光效果。例如，可對反光元件21之内、外反 射面2111、2112進行白色漫反射處理，使得内、外反射面 2111、2112對光產生白色漫反射效果。白色漫反射處理方 • 式可為於反光元件21之表面喷白漆或塗覆白色反光材 料；或利用注塑成型直接成型出表面具有一定粗糙度之反 光元件21。另外，可對反光元件21之内、外反射面2111、 2112進行鏡面處理，使光源模組發出之光線達到不同配光 效果。鏡面處理方式包括對反光元件21之表面拋光處理或 鍛一金屬層。 反光元件21之底座210開設二通孔，電路板11開設 對應之二螺孔，利用二螺釘依次穿過二通孔及電路板η之· 二螺孔’從而將反光元件21固定於電路板頂面。 • 透鏡罩22用於對經過反光元件21之光線進一步優 化。透鏡罩22包括與第一組LED121對應之中心部221及 與第二組LED122對應之週邊部222。中心部221為圓形片 體，巧邊部222自中心部221之周邊向下彎曲延伸成一封 閉之環形片體。中心部221為平滑表面，用於使第一組 LED121之光線經反光元件21反射後更好出射；週邊部222 為，外拱起之弧形凸面’用於使第二組LEdi22之光線經 元件21反射後更好出射。透鏡罩22採用玻璃、聚碳 酸酯、聚曱基丙烯酸甲酯等合適之透明材料製成。根據實 際需要’對透鏡罩22進行不同方式之表面處理，使光源模 組所發出之光線達到不同配光效果，例如，透鏡罩22可為 201104170 空亦可對透鏡罩22之表面進行 理曰在使穿過透鏡罩22 硌化處理。霧 #斜、减弱眩光對眼睛之刺激。二使件光線 括對透鏡罩22之表面噴砂、在透鏡罩:化方式通常包 m鏡罩22之表㈣則m 散粒子 係：注塑成型法製作透鏡罩22時’ 粒子之方法 合在透鏡罩22之原料如聚碳酸醋中，經子均勾現 罩22由於整體結構中均摻雜有擴散粒子，#$型之逯鏡 22之光線變得比較柔和。 使什穿過透鏡罩 應用時，將上述光源模組與照明設 配合可得到各種結構之照明設備。例如，雷、㊉用結構 部固定在一燈座之中心部，透鏡罩22將夯^ 11之底 數個反光元件21罩於其内，且透鏡罩22之^緣=及複 座之周緣，這樣形成一個燈具。此燈具可根據需定於燈 種方式如懸掛、吸頂等安裝於所需場合。 而，以各 本實施例中，如圖3所示，圖1中之光源模έ 支架ΚΠ倒置安裝在一 _ 1〇2上。光源= = 過〜 一組LED121發出之光經過反光元件21之内反射面，第 反射進入主要工作區域，使光線在主要工作區域連211 佈’且光強在不同出射角度範圍大小不同。具體地，=士 於60度之出光角度範圍内，即圖3中之區域光源^广 具有較大之光強，使主要工作區域獲得所需之照度技 度到90度容易產生眩光之角度範圍内，即圖3中 區6Q B、C，光源模組光強較小，以較大程度地減弱眩光現1域 第二組LED122發出之光線大部分經過反光元件21反射到 電路板11未設置LED之背面一側對應之區域（即主要工作 區域之週邊區域），即圖3中之區域D，從而光源模魬之出 光角度可大於180度，實現了光源模組之大角度出光。综 上，第一組LED121之設置保證了主要工作區域之照度= 201104170 及眩光之控制，第二組LED122之設置可實現光源模組大 角度出光，第一組LED121與第二組LED122之協同工作 • 使光源模組在滿足照度要求之情況下，即對眩光現象得到 " 了有效控制，又實現了大角度出光之目的。另外，上述光 源模組在滿足照明範圍廣闊、較大程度之減弱眩光現象之 情況下，此光源模組之光輸出效率大於90%。 透鏡罩22、反光元件21之内、外反射面2111、2112 不同之表面結構’以及此二者之配合，可得到不同之光源 模組，以達到不同之光形。以下給出三個實例說明不同光 源模組之發光情況。 籲實例一：光源模組中，透鏡罩22為透明結構，反光 元件21為白色漫反射罩，光源模組之配光曲線如圖4所 示。通過此配光曲線可明顯看出，光源模組之出光角度可 超過210度，且在出光角度60度到90度容易發生眩光之 範圍内’光強較小。結合圖3所示’光源模組通過支架1〇工 安裝之於頂棚102上’光源模組倒置安裝，當光源模組工 作時，由第一組LED121發出之大部分光線穿過透鏡罩22 之中心部221照党光源4吴組正下方區域’即圖3中之區域 A，這部分光線之出光角度小於60度，光強較大且分佈均 φ 勻，對應到配光曲線中，出光角度小於60度之曲線處於光 強值較大區域且光強變化較為平緩。在出光角度6〇度到 90度容易發生眩光之範圍内，即圖3中之區域B、c，光 強較小，這樣由於光強較小可以減弱眩光之強度。在出光 角度大於180度之範圍内’即圖3中之區域d，圖4中明 顯示意出，光源模組之出光角度可超過210度（甚至可達 240度）。可以理解，在大於210度之出光角度範圍光強較 小，由於此角度範圍需要照亮頂棚，其距離光源模組很近， 較小之光強便可使頂棚達到所需之照度，從而使得整個被 照明之空間達到標準照度之要求。 實例二：光源模組中，透鏡罩22為透明結構，反光 201104170 元件21為鑛鋁之鏡面反射罩’光源模組之配光曲線如圖5 所示。同樣，光源模組之出光角度可超過210度’在出光 ’ 角度60度到90度容易發生眩光之範圍内，光強較小。 、 實例三：光源模組中’透鏡罩22之内表面經過霧化 處理，反光元件21之内、外反射面2111、2112之處理情 況不作要求，例如，可以為實施例一或二其中之一種’光 源模組之配光曲線如圖6所示。通過此配光曲線可明顯看 出，整個曲線接近圓形’光強變化較為平緩，即，光場分 佈較為均勻。因此，此光源模組所發出之光線比較柔和’ 眩光現象得到較好控制。 • 與先前技術相比，上述光源模組設置對應主要工作區 域之第一組LED121及對應週邊區域之第二組LED122’同 時設置反光元件21以分別對第一組LED121與第二組 LED122之光線進行不同調整，使得光源模組之光線在主要 工作區域内光強分佈均勻且眩光程度較小，達到標準照度 要求，同時，光源模組之出光角度可超過210度，具有廣 闊之照射範圍。 【圖式簡單說明】 圖1為本技術方案實施例光源模組之立體組合圖。 φ 圖2為圖1之光源模組之分解圖。 圖3為圖1中光源模組應用時出光分佈圖。 圖4為實施例一之光源模組的配光曲線圖。 圖5為實施例二之光源模組的配光曲線圖。 圖6為實施例三之光源模組的配光曲線圖。 ’ 【主要元件符號說明】 發光模組 10 電路板 11 LED 12 光學系統 20 反光元件 21 透鏡罩 22 底座 210 反射部 211 内反射面 2111 外反射面 2112 201104170 中心部 221 周邊部 222 第一組LED 121 第二組LED 122 * 支架 101 頂棚 102 [s] 10201104170 VI. Description of the Invention: [Technical Field of the Invention] v The present invention relates to a lighting device, and more particularly to a light source module. [Prior Art] Before high-power light-emitting diode (LED) lighting components become lighting products, optical design is usually performed twice. When packaging an LED chip and an integrated circuit into an LED optoelectronic component, an optical design is first performed to solve the range and distribution of the light output angle, light intensity, luminous flux, light intensity distribution, and color temperature of the LED chip, so-called primary optics. design. The purpose of the primary optical design φ is to take out as much of the light as possible from the LED chip. For the high-power LED lighting products, the secondary optical design system has a single lens with a light-emitting angle of about 120 degrees. The secondary optical design changes the optical properties of the light after passing through the lens through the secondary lens, for example, increasing the angle of light exit. The purpose of the secondary optics design is to enable the light emitted by the entire lighting product to meet the design requirements. Since the LED lighting products are usually surface light sources, the secondary optical design is difficult, especially when used as a garage, coal mine, etc., because the light angle of the light fixture is large, the secondary optical design is more difficult. At present, the secondary optical design of LED lighting fixtures with large light-emitting angles is usually achieved by adopting a specific three-dimensional arrangement of LEDs in the lamp, and the design of the lamp structure needs to be adjusted to make the lamp structure complicated and difficult to assemble. The overall cost has also increased. SUMMARY OF THE INVENTION In view of the above, the present invention is directed to a light source module having a large illumination range. A light source module includes a substrate, a plurality of first light sources disposed on a side of a top surface of the substrate, and a plurality of light reflecting elements, wherein the light reflecting elements are disposed corresponding to the first light source for Reflecting the light emitted by the first light source to illuminate the area on the bottom side of the substrate. 201104170 Compared with the prior art, a plurality of first light sources located at the top of the substrate are correspondingly provided with a plurality of reflective elements for reflecting the light emitted by the first light source toward the lower area of the bottom of the circuit board, so that the area under the bottom of the substrate can also be A plurality of first light sources located at the top of the substrate are illuminated to obtain a larger light exit angle of the light source module. The invention will now be further described with reference to the specific embodiments thereof with reference to the accompanying drawings. [Embodiment] Hereinafter, a light source module of the present technical solution will be described in detail with reference to the accompanying drawings and embodiments. Referring to Figures 1 to 2', a light source module includes a light-emitting module 1 and an optical system 20 that cooperates with the light-emitting module 10. The lighting module is for generating light, and includes a circuit board 11 and a plurality of LEDs 12 fixed on the circuit board n. In the present embodiment, the LED 12 refers to an [LED chip packaged LED package using a light-transmitting resin. Therefore, the light transmissive resin is the primary optical system of the LED 12, and the optical system 20 is the secondary optical system of the LED 12 for optically guiding the light passing through the primary optical system, so that the light emitting characteristics of the light source module meet the actual needs. . It can be understood that the LED 12 can also be a light source of other types, and the circuit board 11 can also be a non-circuit board other carrier board as long as it can carry the light source. A plurality of LEDs 12 are disposed on the top side of the circuit board 11. Specifically, the plurality of LEDs 12 includes a first group of LEDs 121 fixed to a central portion of a top surface of the circuit board 11 and a second group of LEDs 122 fixed to a top surface of the circuit board 11 near an edge region. The first group of LEDs 121 is used to illuminate a main working area corresponding to the middle area of the circuit board 1:1 (for example, the area where the board is facing the top), and the second group of LEDs 122 is used to the peripheral area of the main working area (for example The area of the top of the circuit board 11 is illuminated, so that when the light source module is used, such as in a coal mine or a garage, a wider range of illumination can be provided to meet the needs of actual work. In this embodiment, the plurality of LEDs of the second group of LEDs 121 are arranged on a plurality of concentric circles, and the plurality of LEDs of the second group 102104170 are arranged on one circumference, and the second group of LEDs 122 are arranged on the circumference and the first The plurality of circles of the group LEDs 121 are the same • the center circle, and the second group of LEDs 122 are located outside the first group of LEDs 121. - The optical system 20 comprises a plurality of retroreflective elements 21 and a lens cover 22. The light reflecting element 21 is fixed to the top surface of the circuit board 11, and the lens cover 22 is used to cover the light emitting module 10 and the plurality of light reflecting elements 21 therein. A plurality of retroreflective elements 21 are fixed on the top of the circuit board 11 and located near the edge thereof, and reflect the light emitted by the second group of LEDs 122 toward the bottom of the circuit board 11 on the one hand, and the light emitted by the first group of LEDs 121 on the other hand. Reflect to redistribute. Each of the light reflecting elements 21 has an inner reflecting surface for reflecting the first group of LEDs 121, and a reflecting surface for reflecting the second group of LEDs 122 to emit light. In this embodiment, each of the light reflecting elements 21 is disposed corresponding to one of the second groups of LEDs 122, and includes a base 210 and a reflecting portion 211 extending upward from the base 210. The base 210 has a one-piece structure having a concave outer side, and the reflecting portion 211 extends from the outer side of the concave portion in a direction perpendicular or inclined to the base 210. Specifically, the reflecting portion 211 is a curved plate structure recessed from the edge region of the circuit board 11 toward the central region, and includes a curved inner reflecting surface 2111 and a concave outer reflecting surface 2112, and the reflecting portion 211 of each of the reflecting elements 21 is surrounded. A corresponding one of the second group of LEDs 122 is such that the light emitted by the LED is reflected outward by the reflecting portion 211 as much as possible. The inner reflection surface 2111 can be a paraboloid, a spherical surface, an ellipsoidal surface, an aspherical surface, etc., for reflecting and redistributing the light emitted by the plurality of LEDs in the first group of LEDs 121, and correcting the light angle of the first group of LEDs 121 to a suitable angle. The angle of the light emitted by the entire first group of LEDs 121 is continuously distributed in the main working area, and the light intensity value in the range of the light-emitting angle which is easy to generate glare from 60 to 80 degrees is relatively small, and the glare intensity is small; Within the range of light angles within the degree, there is a large light intensity value to meet the requirements of standard illumination. The outer reflective surface 2112 can also be a paraboloid, a spherical surface, an ellipsoidal surface, an aspherical surface, etc., for reflecting the light 201104170 emitted by the plurality of LEDs in the second group of LEDs 122 to the area opposite the top of the circuit board 11 to make the light source mode The group reaches a large angle of light, and most of the light emitted by the second group of LEDs 122 strikes the area opposite to the top of the circuit board. Thus, the angle of the light source module is usually greater than 180 degrees (of course, less than 360 degrees). It can even exceed 210 degrees. The light reflecting member 21 is a plastic member or a sheet metal member. According to actual needs, the inner and outer reflective surfaces 2111, 2112 of the retroreflective element 21 can be surface-treated to achieve different ways of reflecting light, so that the light emitted by the light source module can achieve different light distribution effects. For example, the inner and outer reflective surfaces 2111, 2112 of the retroreflective element 21 can be subjected to white diffuse reflection processing so that the inner and outer reflective surfaces 2111, 2112 produce a white diffuse reflection effect on the light. The white diffuse reflection treatment method may be to spray white paint or white reflective material on the surface of the reflective member 21; or directly form a reflective member 21 having a certain roughness on the surface by injection molding. In addition, the inner and outer reflective surfaces 2111, 2112 of the retroreflective element 21 can be mirror-finished to achieve different light distribution effects. The mirror treatment includes polishing the surface of the retroreflective element 21 or forging a metal layer. The base 210 of the retroreflective element 21 defines two through holes, and the circuit board 11 defines a corresponding two screw holes. The two screws are sequentially passed through the two through holes and the second and second screw holes of the circuit board η to fix the reflective component 21 to the top of the circuit board. surface. • The lens cover 22 is used to further optimize the light passing through the light reflecting element 21. The lens cover 22 includes a central portion 221 corresponding to the first group of LEDs 121 and a peripheral portion 222 corresponding to the second group of LEDs 122. The central portion 221 is a circular piece, and the edge portion 222 is bent downward from the periphery of the central portion 221 to form a closed annular piece. The central portion 221 is a smooth surface for better reflecting the light of the first group of LEDs 121 after being reflected by the retroreflective element 21; the peripheral portion 222 is an arcuate convex surface of the outer arch for transmitting the light of the second group of LEdis 22 21 is better to reflect after reflection. The lens cover 22 is made of a suitable transparent material such as glass, polycarbonate, or polymethyl methacrylate. According to actual needs, the lens cover 22 is subjected to different surface treatments, so that the light emitted by the light source module can achieve different light distribution effects. For example, the lens cover 22 can be 201104170, and the surface of the lens cover 22 can be treated. The film is passed through the lens cover 22 to be deuterated. Fog # oblique, reduce the irritating glare on the eyes. The light of the lens cover is blasted to the surface of the lens cover 22, and the lens cover is usually formed by the mirror cover 22 (4). The m particle system: when the lens cover 22 is formed by injection molding, the method of the particle is combined with the lens cover. In the raw material of 22, such as polycarbonate, the kerf 22 is doped with diffusing particles in the overall structure, and the light of the #22 type 逯 mirror 22 becomes softer. When the lens cover is applied, the light source module and the illumination are matched to obtain illumination devices of various structures. For example, the lightning and ten-use structural portions are fixed at a central portion of a lamp holder, and the lens cover 22 covers a plurality of reflective elements 21 at the bottom of the cymbal 11 and the periphery of the lens cover 22 and the periphery of the pedestal. Form a light fixture. This luminaire can be installed in the required occasion according to the way the lamp is to be mounted, such as suspension and ceiling. However, in each of the embodiments, as shown in Fig. 3, the light source module holder 图 of Fig. 1 is mounted upside down on a _ 1 〇 2 . Light source = = over ~ The light emitted by a group of LEDs 121 passes through the inner reflecting surface of the reflecting element 21, and the first reflection enters the main working area, so that the light is connected to the main working area and the light intensity is different in different range of the exit angle. Specifically, the range of the angle of light in the range of 60 degrees, that is, the area of the light source in Fig. 3 has a large light intensity, so that the main working area obtains the required illuminance technique to 90 degrees, which is easy to produce glare angle range. Inside, that is, the area 6Q B, C in Fig. 3, the light source module has a small light intensity to largely reduce the glare. The light emitted by the second group of LEDs 122 is mostly reflected by the reflective element 21 to the circuit board 11 is not set. The area corresponding to the back side of the LED (ie, the peripheral area of the main working area), that is, the area D in FIG. 3, so that the light exiting angle of the light source module can be greater than 180 degrees, and the large-angle light output of the light source module is realized. In summary, the setting of the first group of LEDs 121 ensures the illumination of the main working area = 201104170 and the control of glare, and the setting of the second group of LEDs 122 can achieve the high-angle light output of the light source module, and the first group of LEDs 121 cooperate with the second group of LEDs 122. • The light source module is effectively controlled to meet the illuminance requirements, that is, the glare phenomenon is achieved, and the purpose of large-angle light output is realized. In addition, the light source module has a light output efficiency of more than 90% when the light source module satisfies a wide range of illumination and a large degree of glare reduction. Different surface structures of the lens cover 22, the inner and outer reflective surfaces 2111, 2112 of the light-reflecting element 21, and the combination of the two, can obtain different light source modules to achieve different light shapes. Three examples are given below to illustrate the illumination of different light source modules. Example 1: In the light source module, the lens cover 22 is a transparent structure, and the reflective element 21 is a white diffuse reflection cover. The light distribution curve of the light source module is shown in FIG. 4 . It can be clearly seen from the light distribution curve that the light source module can have an exit angle of more than 210 degrees, and the light intensity is small in the range where the light exit angle is 60 degrees to 90 degrees. As shown in FIG. 3, the 'light source module is installed on the ceiling 102 through the bracket 1 and the light source module is mounted upside down. When the light source module is in operation, most of the light emitted by the first group of LEDs 121 passes through the lens cover 22 The central part 221 is in the area below the party light source 4 Wu group, that is, the area A in Fig. 3, the light angle of the part of the light is less than 60 degrees, the light intensity is large and the distribution is φ uniform, corresponding to the light distribution curve, the light exit angle is less than 60 The curve of the degree is in a region where the light intensity is large and the light intensity changes relatively gently. In the range where the light exit angle is 6 to 90 degrees, glare is easy to occur, that is, the regions B and c in Fig. 3, the light intensity is small, so that the intensity of the glare can be weakened due to the small light intensity. In the range where the angle of light is greater than 180 degrees, i.e., the area d in Fig. 3, it is clearly shown in Fig. 4 that the light exiting angle of the light source module can exceed 210 degrees (or even 240 degrees). It can be understood that the light intensity is smaller in the range of light angles greater than 210 degrees. Since the angle range needs to illuminate the ceiling, it is close to the light source module, and the light intensity can make the ceiling reach the required illumination, thereby making the ceiling The entire illuminated space meets the standard illumination requirements. Example 2: In the light source module, the lens cover 22 is a transparent structure, and the reflection 201104170 component 21 is a specular reflector of the mineral aluminum. The light distribution curve of the light source module is shown in FIG. 5 . Similarly, the light source module can emit light at an angle exceeding 210 degrees. In the range where the light exit angle is 60 degrees to 90 degrees, glare is easy to occur, and the light intensity is small. Example 3: In the light source module, the inner surface of the lens cover 22 is atomized, and the processing of the inner and outer reflective surfaces 2111 and 2112 of the reflective element 21 is not required. For example, it may be one of the first or second embodiment. 'The light distribution curve of the light source module is shown in Figure 6. It can be clearly seen from this light distribution curve that the entire curve is close to a circle. The change in light intensity is relatively flat, that is, the light field distribution is relatively uniform. Therefore, the light emitted by the light source module is relatively softer. The glare phenomenon is well controlled. Compared with the prior art, the light source module is configured to set a first group of LEDs 121 corresponding to the main working area and a second group of LEDs 122' corresponding to the peripheral area, and simultaneously set the light reflecting element 21 to respectively illuminate the light of the first group of LEDs 121 and the second group of LEDs 122. Different adjustments are made so that the light intensity of the light source module is evenly distributed in the main working area and the glare is small, which meets the standard illumination requirement. At the same time, the light source module can have an exit angle of more than 210 degrees and has a wide illumination range. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective assembled view of a light source module according to an embodiment of the present technical solution. φ Figure 2 is an exploded view of the light source module of Figure 1. FIG. 3 is a light distribution diagram of the light source module of FIG. 1 when applied. 4 is a light distribution graph of the light source module of the first embodiment. FIG. 5 is a light distribution curve diagram of the light source module of the second embodiment. FIG. 6 is a light distribution curve diagram of the light source module of the third embodiment. ' [Main component symbol description] Light-emitting module 10 Circuit board 11 LED 12 Optical system 20 Reflective element 21 Lens cover 22 Base 210 Reflection part 211 Internal reflection surface 2111 External reflection surface 2112 201104170 Center part 221 Peripheral part 222 First group of LEDs 121 The second set of LEDs 122 * Bracket 101 Ceiling 102 [s] 10